Question 69General Subjects - 1st Asst/Chief

The correct answer is B) faulty operation of the brine overboard pump. In a flash-type distilling plant, the brine overboard pump is responsible for removing the concentrated brine from the system. If this pump is not functioning properly, it can lead to a buildup or "carryover" of brine in the distillation process. This carryover can contaminate the freshwater distillate, reducing its quality. The other options are incorrect because low or high distillate conductivity, and a pressure drop through the loop seal, are not direct causes of brine carryover. The key factor is the proper operation of the brine overboard pump to maintain the appropriate balance in the distillation system.